In view of the problem that the extraction parameters of image analysis method fluctuate greatly due to the influence of external environment in the process of image acquisition,we propose a method of introducing reference(marker block)in the process of image acquisition and analysis.This method can reduce the influence of shooting conditions on image processing results,and enhance the contrast between images obtained under different conditions.We study the effect of demolding agent and vibrating time on the appearance chromatic aberration and pore of fair-faced concrete by this method.The results show that the vibration time has a significant effect on the surface chromatic aberration and the pore,a suitable vibrating conditions improving the effect of demolding agent.The parameters of fault pore and fault diameter based on the abrupt change of pore diameter can be used to evaluate the appearance quality of fair-faced concrete and analyze the corresponding reasons.